FRB20190213A-20221116-S001-R001-R-232948.fts
upper limit SN vs magnitude graph from USNO-B1 catalog
UT upper limit
2022-11-16 14:29:50.368
16.539 +/- 1.252 (3sigma)
15.995 +/- 1.254 (5sigma)
15.257 +/- 1.258 (10sigma)